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add support for the ATTR SET attribute per draft-marques-ppvpn-ibgp

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TODO boundary and recursion check
add reference (draft-marques-ppvpn-rt-constrain)
  to the Route Target Information SAFI
This commit is contained in:
hannes 2003-12-23 22:07:56 +00:00
parent 0453e6cf40
commit 28146cdebd
1 changed files with 40 additions and 2 deletions
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42
print-bgp.c
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@ -36,7 +36,7 @@
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.74 2003-11-16 09:36:15 guy Exp $";
"@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.75 2003-12-23 22:07:56 hannes Exp $";
#endif
#include <tcpdump-stdinc.h>
@ -139,6 +139,7 @@ struct bgp_attr {
#define BGPTYPE_MP_REACH_NLRI 14 /* RFC2283 */
#define BGPTYPE_MP_UNREACH_NLRI 15 /* RFC2283 */
#define BGPTYPE_EXTD_COMMUNITIES 16 /* draft-ietf-idr-bgp-ext-communities */
#define BGPTYPE_ATTR_SET 128 /* draft-marques-ppvpn-ibgp */
static struct tok bgp_attr_values[] = {
{ BGPTYPE_ORIGIN, "Origin"},
@ -157,6 +158,7 @@ static struct tok bgp_attr_values[] = {
{ BGPTYPE_MP_REACH_NLRI, "Multi-Protocol Reach NLRI"},
{ BGPTYPE_MP_UNREACH_NLRI, "Multi-Protocol Unreach NLRI"},
{ BGPTYPE_EXTD_COMMUNITIES, "Extended Community"},
{ BGPTYPE_ATTR_SET, "Attribute Set"},
{ 255, "Reserved for development"},
{ 0, NULL}
};
@ -288,7 +290,7 @@ static struct tok bgp_safi_values[] = {
{ SAFNUM_VPNUNICAST, "labeled VPN Unicast"},
{ SAFNUM_VPNMULTICAST, "labeled VPN Multicast"},
{ SAFNUM_VPNUNIMULTICAST, "labeled VPN Unicast+Multicast"},
{ SAFNUM_RT_ROUTING_INFO, "Route Target Routing Information"},
{ SAFNUM_RT_ROUTING_INFO, "Route Target Routing Information"}, /* draft-marques-ppvpn-rt-constrain-01.txt */
{ 0, NULL }
};
@ -1230,6 +1232,42 @@ bgp_attr_print(const struct bgp_attr *attr, const u_char *pptr, int len)
}
break;
case BGPTYPE_ATTR_SET:
printf("\n\t Origin AS: %u", EXTRACT_32BITS(tptr));
tptr+=4;
len -=4;
while (len >= 2 ) {
int alen;
struct bgp_attr bgpa;
memcpy(&bgpa, tptr, sizeof(bgpa));
alen = bgp_attr_len(&bgpa);
tptr += bgp_attr_off(&bgpa);
len -= bgp_attr_off(&bgpa);
printf("\n\t %s (%u), length: %u",
tok2str(bgp_attr_values, "Unknown Attribute", bgpa.bgpa_type),
bgpa.bgpa_type,
alen);
if (bgpa.bgpa_flags) {
printf(", Flags [%s%s%s%s",
bgpa.bgpa_flags & 0x80 ? "O" : "",
bgpa.bgpa_flags & 0x40 ? "T" : "",
bgpa.bgpa_flags & 0x20 ? "P" : "",
bgpa.bgpa_flags & 0x10 ? "E" : "");
if (bgpa.bgpa_flags & 0xf)
printf("+%x", bgpa.bgpa_flags & 0xf);
printf("]: ");
}
bgp_attr_print(&bgpa, tptr, alen); /* FIXME check for recursion */
tptr += alen;
len -= alen;
}
default:
printf("\n\t no Attribute %u decoder",attr->bgpa_type); /* we have no decoder for the attribute */
if (vflag <= 1)